Guard for birds.



L. G. SWANSON.

I GUARD FOR BIRDS. APPLICATION FILED 001'. 27, 1909.

Patented Nov. 1, 1910.

LUDVIG G. SWANSON, 0F SPRINGFIELD, MASSACHUSETTS, ASSIGNOR OF ONE-HALFTO HANS W. GUTERMANN, OF SPRINGFIELD, MASSACHUSETTS.

GUARD FOR- BIRDS.

Specification of Letters Patent.

Application filed October 2'7, 1909.

To all whom it may concern.

Be it known that I, LUDVIG G. SWANSON, a citizen of the United States ofAmerica, and resident of Springfield, in the county of Hampden and Stateof Massachusetts, have invented certain new and useful Improvements inGuards ,for Birds, of which the following is a full, clear, and exactdescription.

This invention relates to guards for birds, the object of the inventionbeing to provide a device which, when secured in position upon anydesired portion of a building, such as a window sill or window shutterfor instance, will efiectually prevent birds from alighting upon suchwindow sill or shutter.

Devices of the character set forth are not limited to use in theparticular places specified for they may also be secured to projectingportions of window or door frames or any other suitable projections upona build- In devices of this character it is not only desirable toprovide a structure which will serve to prevent the alighting of birds,but it is. desirable to accomplish this object through the medium of astructure capable of being very cheaply manufactured and one which maybe secured in position with a minimum expenditure of labor andvmaterial.

To accomplish these ends, it is designed to provide a bird guard whichmay be made of a single strip of sheet metal stamped into proper form toprovide both the body of the bird guard and the holding means therefor,at a single operation and at a very low cost.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows.

In the accompanying drawing, Figure 1 is a side elevation of the blankfrom which the bird guard is formed, Fig. 2 is a perspective viewshowing the bird guard applied to the upper edge of a window shutter,and, Fig. 3 is a side elevation, showing the bird guard applied to ashutter but in a different position.

Like numerals designate corresponding parts in all of the figures of thedrawing.

Fig. 1 shows a blank after it has been stamped to serrate it and toproduce the various holding lugs hereinafter described, but before saidholding lugs have been bent into a plane at right angles to the plane ofthe body of the guard as illustrated in Fig. 2. The blank is stamped orotherwise formed, preferably in such manner as to produce elongatedteeth 5 and a series of shorter teeth 6, these teeth 5 and 6 extendingthroughout the upper edge of the guard. The lower edge of the guard isincised at 7 and 8 to produce a plurality of holding lugs or tongues 9and 10. In the preferred form of the device shown in Fig. 2, these lugsor tongues are bent into a plane at right angles to the body portion 11of the guard and are in this figure illustrated as being pierced bysmall nails or other fastening devices 11, which enter the upper rail 12of the shutter 13 and serve to hold the guard securely in place.Openings 14 for the passage of the fastening devices 11 may be formed inthe holding lugs or tongues when the guard is stamped out, if desired,or these openings may be omitted and the piercing of these lugs beaccomplished by driving the nails through them if the metal of which theguard is to be formed is sufliciently light to permit this to be done.

In the modified form of the device illustrated in Fig. 3, the guard ismounted in a slightly different position from that disclosed in Fig. 2.In Fig. 3, the holding lugs are not bent at right angles to the plane ofthe body of the guard, but lie in the same plane and the fasteningdevices 11 enter the front face of the upper rail of the shutter insteadof the top face thereof.

The incising of the blank at 7 and 8 in Fig. 1 not only forms theholding lugs or tongues as hereinbefore set forth, but permits the readybending of the guard to any desired angle with relation to the holdinglugs and consequently to any desired angle with relation to the shutter.

From the foregoing description, it will be seen that the presentinvention provides an eflicient bird guard together with practical andeconomical means for securing the same in position, but it is to beunderstood that the invention is not limited to the precise constructionset forth but includes within its purview such changes as may be madewithin the scope of the appended claims.

Having described my invention, what I claim is:

1. A bird guard consisting of a single strip of sheet metal having aserrated upper edge and having incisions which extend first 3. A birdguard comprising a strip of metal having a serrated upper edge and beinglongitudinally incised for a short distance from each of its ends andhaving a plurality of upwardly and horizontally extending incisionsintermediate its ends.

Signed by me at Springfield, Mass, in presence of two subscribingwitnesses.

LUDVIG G. SWANSON. WVitnesses WM. S. BELLows, G. R. DRISCOLL.

